Synopsis: This poster describes the development of two new measures that reflect a positive youth development/system of care perspective in children’s mental health. The Youth Empowerment Scale/Mental Health assesses youths’ perceptions of their mental health self-efficacy, and the Youth Participation in Planning scale assesses youths' perceptions of whether their interdisciplinary care/treatment/service planning teams support meaningful youth participation in the planning process. Factor analyses and scale psychometrics will be presented.